<script type="module">
	{
		let propKey = 'foo';

		let obj = {
			'first word': 'hello',
			[propKey]: true,
			['a' + 'bc']: 123,
			['h'+'ello']() {
    			return 'hi';
  			}
		}
		
		document.write(`属性名表达式：${JSON.stringify(obj)}<br><br>`);
	}
</script>